Removal of Chlorophenols Compounds Using Treated Jatropha Seed Shells Adsorbents: Characterization and Thermodynamic

In this study, Jatropha seed shells from Yemeni plant have been tested for studying adsorption of treated seeds shells to remove chlorophenol compounds. The resulting adsorbents were designated as JAT1, JAT2 and JAT3. Most of the acidic groups on the surface were found to be phenolic in nature (37.5% in the case of JAT1 and 60% in the case of JAT). The adsorption of chlorophenol on JAT1, JAT2 and JAT3 was investigated in the temperature range 35–70 °C for initial chlorophenols concentrations ranging from 20 to 100 ppm. JAT2 was thereby found to be the best with respect to its capability to remove chlorophenols from solution indicating that thermal treatment at 500 °C is suitable to produce a good adsorbent. JAT3 is the worst in removing DCP even at high temperatures. It was also found that the removal efficiencies were in general enhanced at lower pH for all three adsorbents and for the two chlorophenols. For DCP, the corresponding heats of adsorption were found to be + 5.3, − 10.75 and − 14.4 kJ/mol. The small values for the heat of adsorption indicate that the interaction of chlorophenols with the adsorbent surface does not differ significantly from its interaction with water molecules in solution

Online Software Copyright Protection Using Trust Platform Module and Database Watermarking

As the digital information can be copied and transmitted easily, new and novel methods for the investment safeguarding are highly important. Many software companies developed several ways to prevent their software from piracy but hackers are still working. Other companies have their own techniques, but they keep them for confidential. This paper utilizes the digital watermarking and the Trust Platform Module (TPM) to enhance software piracy protection and decrease the efforts costs to protect software copyrights. The paper conducts a new approach called Trust Platform Module and Database Watermarking (TPMDWM) which is developed to enhance the software copyright protection. The proposed approach combines the new technologies of Trust Platform Module with database watermarking, hash function, and advanced encryption standard to enhance software copyright protection and decrease the cost and loose of software revenues. As shown by results, TPMDWM can effectively prevent illegal copying, getting the software at installation or updating license. The results also show that TPMDWM approach does not affect the software code and control. In addition, TPMDWM decreases dongle cost and it can also be used for client identification

KNOWLEDGE AND ATTITUDE TOWARD CONE BEAM COMPUTED TOMOGRAPHY: A QUESTIONNAIRE STUDY AMONG YEMENI DENTAL PRACTITIONERS

Background: Cone beam computed tomography (CBCT) is a marvelous three-dimensional (3D) dental and maxillofacial imaging method industrial in recent years. It is based on a multi-surface resampling process that has distinct advantages such as condensed radiated area size, image resolution, fast scanning time, exclusive maxillofacial imaging patterns and reduced image errors. Objectives: This study aimed to evaluate the knowledge and attitude of a sample of Yemeni dentists toward the use of CBCT.  Methods: A total of 98 selected dentists participated in this study. The self-administered questionnaires, consisting of two parts, were distributed: The first is related to the demographic characteristics and the second section is related to the knowledge and attitude of the dental practitioners towards CBCT. The study was conducted in Dhamar city, Yemen. The information was assembled through a pre-prepared questionnaire consisted of 24 structured close-ended questions. Descriptive statistics calculated in terms of frequencies and percentages. A software program (SPSS V25) was used for data analysis. Results: The majority of respondents were 86 general dental practitioners (87.8%), most of whom were working in private dental clinics. More than half of the participants (67.3%) used digital imaging techniques to take radiographs. The most frequent source of knowledge about respondents' digital imaging techniques was the Internet (39%). Awareness of CBCT was higher in dentists, dental specialists, and those who were in an academic position. Lower radiation dose (26%), followed by secure image processing (23%), and short scanning time (21%) were the most common advantages of CBCT reported by the respondents. Conclusion: Study participant responses reflect the importance of CBCT in the dental field. Awareness about CBCT among dentists in Yemen is good and appears to be different among dentists with regard to gender, qualifications and type of work. The study requires that continuing learning courses be held in dental colleges in Yemen including appropriate hands-on CBCT training and integration with other clinical courses to improve the dentist’s basic knowledge and interpretation regarding this technology.                          Peer Review History: Received: 4 January 2022; Revised: 21 February; Accepted: 3 March, Available online: 15 March 2022 Academic Editor: Dr. Emmanuel O. Olorunsola, Department of Pharmaceutics & Pharmaceutical Technology, University of Uyo, Nigeria, [email protected] UJPR follows the most transparent and toughest ‘Advanced OPEN peer review’ system. The identity of the authors and, reviewers will be known to each other. This transparent process will help to eradicate any possible malicious/purposeful interference by any person (publishing staff, reviewer, editor, author, etc) during peer review. As a result of this unique system, all reviewers will get their due recognition and respect, once their names are published in the papers. We expect that, by publishing peer review reports with published papers, will be helpful to many authors for drafting their article according to the specifications. Auhors will remove any error of their article and they will improve their article(s) according to the previous reports displayed with published article(s). The main purpose of it is ‘to improve the quality of a candidate manuscript’. Our reviewers check the ‘strength and weakness of a manuscript honestly’. There will increase in the perfection, and transparency.  Received file:                Reviewer's Comments: Average Peer review marks at initial stage: 6.5/10 Average Peer review marks at publication stage: 7.5/10 Reviewers: Dr. Asia Selman Abdullah, University of Basrah, Iraq, [email protected] Prof. Dr. Hassan A.H. Al-Shamahy, Sana'a University, Yemen, [email protected] Similar Articles: KNOWLEDGE AND PERCEPTION OF MOLAR INCISOR HYPOMINERALIZATION AMONG DENTAL PRACTITIONERS IN SANA’A CITY- YEME